DateMath - Privacy Policy

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5月29日修改

1. Introduction

DateMath ("we", "our", or "us") is committed to protecting your privacy. This Privacy Policy explains how information is handled when you use the DateMath mobile application (the "App").​

DateMath is a simple utility for calculating the number of days between two dates. When "Show Time" is enabled, it can also calculate the interval between two date-and-time values down to the minute.​

2. Information We Collect

We do not collect, store, transmit, sell, or share any personal information from users.​

Specifically, we do not collect:

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Names, email addresses, phone numbers, or other personal identifiers​

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Location data​

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Contacts, calendars, photos, files, or media​

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Date values entered into the calculator​

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Usage analytics, advertising identifiers, or tracking data​

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Payment card details or billing information​

3. Local Data Stored on Your Device

The App stores a small amount of non-personal app state locally on your device using iOS storage mechanisms. This may include:​

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App preferences such as selected language and theme​

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Whether the first-launch onboarding flow has been completed​

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The first launch date used to determine the local free-trial period​

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Local purchase or subscription status used to unlock premium access​

Date calculations are performed on your device. The start date, end date, and optional time values you select are not sent to us or to any external server.​

4. How We Use Data

Because we do not collect personal information, we do not use your personal data for analytics, advertising, profiling, marketing, or data sharing.​

Local app state is used only to:

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Provide the App's date and time interval calculation features​

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Remember local preferences​

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Display onboarding and trial status appropriately​

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Enable premium access after a purchase or subscription is verified through Apple​

5. Data Sharing

We do not share user data with third parties. We do not sell user data.

6. Third-Party Services

The App does not use third-party analytics, advertising SDKs, cloud storage, custom authentication, or external content providers.​

For purchases and subscriptions, the App uses Apple's StoreKit and App Store payment system. Apple processes payments and manages subscriptions according to Apple's own terms and privacy policy. We do not receive or store your payment card information.​

7. Payments, Subscriptions, and Trial Period

DateMath - Privacy Policy​

DateMath - Privacy Policy